Apparatus for laying concrete pipes.



E. L. RANSOME. APPARATUS FOB LAYING CONCRETE PIPBB. urmonzox rxLnn nun.so, 1901. nmmwnn nov.1e,1noa.

Patented Jan. 26. 1909. 4 summa-annu' 1.

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Wl TNE SSE S -dg .erro/wer E. L. RANSOMB. APPARATUS FOR LAYING CONCRETEPIPES. Arrmouxox rrLsn um. so, 19o?. nnunwnn 30m16.190s.

91 0,578. Patented Jan. 26. 1909.

w/nvEssEs Z /N ron :y he aMKLL/-m 5y a@ QA/W4 E. L. RANSOMB. 'APPARATUSPOB LAYING CONCRETE PIPEB. Arrmon'ron :man nu.. ao.` 19o?. nnxnwsnlov.1s,1sns.

Patented Jan. 26. 1909.

4 SHEETS-SHEET 8.

WIT NE SSE 6 7 OZ VE NT 0H Bf mi L /Af A TTOHNEY E. Il'. RANSOME.APPARATUS POR LAYING CONCRETE PIPEB. APPLIOATION FILED HALSD, 1907.RBBBWBD BOVAG, 1908. 91 0,573, Patented Jan 26. 1909. 4 SHEETS-SHEET 4.

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Wl TNESSES P4. c. www fwmrwmm mmv ron 4in' a r'romvsr 4UNITED sTATnsPATENT OFFICE,

ERNEST LESLIE nANsoME, OFNEW Yong, n.1'.

peeleatlonfo! Letten Patent..

\ Patented aan. se, 190e.

Appunti@ ma :una so, 1am, new' 11. s615317. amm November 16,1903. anni11. 462,916'.

To all whom it l:m1/y comm: l

Be it known that I, EnNnsrr Imam B soun of the borough of- New York,and'State of NewI p vented certain new and useful in A paratus forLaying Concrete .eef which4 thefollowing'is a. ull, clear, an" metleiipfialcilication, such vas will-enable others.

ous spiral may be ein loyed as in myyprierv .65 fpatenti'hlo. 517,808,ated .various other methods may e resorted te,

led in the art to whichitlappertainsjto make-and usethe same.

The principal object'o m present invention is. toimprove and re er ra idvand .ei- `xective in operation apparatus for' yingeonr crete pipes'i'nsito.'

The. invention is 'ous sizesparticulgar tothe constructiomof la e pipes,conduits, subways and thelike'. carrying out my invention, the apparatus is caused to 'Inova automa tiemllyl through the trench or over thesurface on which the pipe islaid, by vthe `action of an engine or motormounted on the apparatus. Preferablyvthisengine, is connected to .awinding mechanism Vto which is fastened. a cable anchored in the 4trenchahead of the peculiar mechnm'which I ,have dcvisedfor,

' the collapsed coresectiens forward,

ca the istmguishing elementof whichis a cable or other similar" tractionmeans driven to nove through the cores andado. ted tohave the collapsedcores connected t erewith so that theymay-,be carried forward at theproper periods in` the operartion of the appa- Totus.A s'lStill a urtherfeatule of mylinventiontre;

esint e'peculiarr ative arrangemen o the Shaper, inverted mold andr cai,together' with 'the devices for connecting t nd cit, of. Yer-k, invii spliiiiefm'pipepf were.

orward anto'statically through the pipe or conduit tothe head of admitthe introduction. of the reinforce'. 60

reinforce is preferably of the character disclosed in my copendingapplication for stent on pipe molds, Serial No. 356,183, ed February 7,1907, although a continumy invention being in no sense limitedin thisrespect.

- The invention involves various other fea-1 'i4' .tures` of major orminor implortance, alll of which will'be fully set forth ereinafter andparticularly pointed out in the claims.

Reference is had to the, accompanying invention, the preferred manneractxcally embodying the` same, in which swings, i Figures 1*, 1b, and1represent a side elevation of the apparatus in operative adjustment,the three views being continuations of each other and dividedrespectively at the lines L -a, aa, and b-b, v -b; Fig.

y2 is a. cross section of one of the cores, illustrating by brokenlinesthe position ci the corecontracted and'in the operation of beingadvanced through the other core sections to `the head end of themachine; F` 3v isa lona gitndinalsection through sev connected cores;Fig. 4 lis a sectionalvew showing the 90 operation of the collapsed corein riding into and through the extended cores; Fig.. 5 is a'. plan viewof the adjustable connection between the s er and the inverted mold;

Fi g. 6 is a longltudinal section .thereof 95 7 1s a cross section onthe line7`7 of Fig Fi 8 is a detail ofthe stop `for releasing the oa lerip, and 9 is a detail ofthe grip. l

1n Fig.- 1f,.1.0 indicates earth shaper whichv is semi-circular in crossl section'Y for ,au circular' pipe j and adapted to run through thecorrespondin ly formed hot-- 'toin of the trench in. which t e pipe isleid.` -Preferablytkis shoe has downwardly and '.forward downwardlysloping forwardl -sicping front 4and rear ed es.

.12 the inverted mold whxchhaaa' i front edge indicated by the brokeniimlis; in Fig. 13'

drawings, which illustrate, as an exemples 7li4 thereof.

amava .and preferably a perpendicular rear edge .indicated byq thebroken line 12h in 1b, although this is in no sense essential.

14 indicates the cap mold which is joined to the Shaper by means f'horizontal side beams 15, 'which may if desired, be flanged and set onearth benches at the side of the tr'ench in the manner disclosed in mapplication, Serial Number 321,569, filed une 13, 1906. The cap 14 has aforwardly and downwardly sloping front edge and, preferably, acorrespondingly formed rear edge. The parts 10, 12, and 14 are adapted,as will more fully appear hereinafter, to move as a i unit progressivelytbrou h the trench and the invert of the pipe i.. e. the bottom half isformed by tam'pirig the concrete on the edge 12 of the invert mold 12,While the cap or top section of the ipe is formed by taming the concreteon t e diagonal. for- War e ge of the cap '14. In this manner the pipeis shaped and by continuously susplying and tamping the concrete, the -avance of the a p'aratusand the formation of the pipe may e madeconcurrent.

`For advancing the apparatus, I prefer to employ an anchor (not shown)of any desired sort driven into `the earth some dis-V tance ahead and towhich a hauling cable 16 (see Fig. 1") is connected. 'Ibis cable extendsto the earth shaper and is wound over a drum 17 mounted on the forwardportion The drum is driven b a ratchet motion 18 or the like connected ya link 19 with a system of gearing 20. Said gear-in 20 is driven by amotor or engine mounte on the earth shaper. The motor or engine may beof any sort, 4for instance gasolene or electric and is indicated at 20inthe drawhe earth Shaper and cap are directly connected by the' eams 15but the inverted mold is connecteflto the Shaper so that the relativeposition of these parts may be varied as the nature-of the operation marequire. This connection is in the form of a ar, chain or the like andis indicated by brokenlines at 21 in Fi 1. "5, 6, and 7 show the detailsof t mechanism from whichit will be seen that the chain-21 is furnishedwith a hook 22 which isad Vted to engage a bar 23 sliding in slotted angplates 24 mounted on the bottom of the sh r, parallel to eac other.rl`he lpin 23 is h ldi-adustabl'l in the angle plates y means .ofa o e25, t e arms of which engage the in* an atftheir opposite ends areprovided with a nut25 in w ich a threaded shaft 26 operates. This shaftis arranged to turn in a illow block 27 fastened to the bottom of t eearth Shaper and the forwmd end of the shaft is furnished with a pawland ratchet lever mechanism 28 and a hand wheel 29. 'Ihese devices 28and 29 represent alternative means for rotating the shaft, the handwheel being used when no `collaps' great power is required and theratchet lever mechanism being employed to put greater force on theshaft, for example at or toward the end of an adjusting operation. Itwill be seen that by thus rotatin the shaft the position of the pin 23ma be c ianged at will, thus changing the lengt of the connectionbetween the earth Shaper and inverted mold to suit the peculiarconditions of thc operation. It will be further seen that the hook 22may be readily disconnected from the pin 23 to facilitate theintroduction of the reinforce, which is indicated in outline at 30 in Fis. 1, 1", and 1.

ince the pipe is formed of wet concrete it requires a certain internalsup ort during the setting periodto prevent co apse before the concretebecomes hard. This is effected by means of the core mold-sections. Greatdifliculty has heretofore been encountered in removing thecores from thepipe, because'of the fact that the cores firmly engage the inner Wallsof the pipe,` and when the pipe is hard the cores cannot be withdrawnexcept by the application of considerable power. rlo enable `thisdisadvantage to be satisfactorily encountered, I form the corescollapsible, so that after the concrete has set around a particularcore, that core may be collapsed, thus enabling it to be moved freelythrough the other cores to the front end of the niachine, Withoutcontact with the cores, excepting such thesliding of the collapsed corethrough the other or extended cores. The details of this novel core areshown in Fi s. 2, 3, and `4., from which it willbe seen that each coreis provided with a` bottom section 31, arcshaped in cross section, andhaving wings 32 'hinged to each. side edge thereof as indicated at thepoints 33, the arrangement being such that the-w' ma beextended as shownby full lines in Figa?, -orniing with the section 31 a cylindric corani-`thevvmgsifmay be thrown down as. indicated by Y' broken lines, thusmoved t ou' `tllie other cores which are still extended inv o erativeadjustment. For the purpose of hol g the wings=;82 extended and at thesame ltime allowingJthem to be readil colla sed when desired, I mount onone o said W a Arock shaft 34' and to this a h latchor latches 35 areattached. The other wihg is provided with an angle member 36 at itsextreme edge which is adapted to engage a similar member 37 secured tothe edge of the first named wing and when the parts are so engaged thelatch 35 embraces the member 36 firmly holding the parts together. Byrocking the shaft 35, the latch may be diss engaged and the Wingsallowed to collapse. To facilitate thus rockin fthe shaft, the same isprovided with a cran ed end 34EL at the rear end of the core. In orderto overcome the possibility of the parts becoming clogged core andenabling it to be contact as may be incident to iic , alinement of 'thesame.

are constructed of sheet metal or other suitthrough the appartus and isemployed to ing win platos are adapted to with cement and' fail' tocollapse on releasing the latch, I form 1n the member 36 anopening36which allows the introduction of a pinch bar so that the same may beworked against the ratchet edge 37* of the member 37 t us enablin ztheoperator to ry the two apart. he end edges o the body oi-tiong 3L of thecore sections arebeveled as indicated at 38 (Figs. 3 ahd 4) so that aneven connection will hernadd etween them sind a uniform pipo constructand also so that as vone of the core seiztions "is collapsed 'the samemay 'de ip frelguon the contiguous section lly set forth hereinafter. Io provide lian es 39 which-as here shoivnl are securedto the orwardedges of the wings 3.2. of,tlle core sections and may, 'f desire extendcompletely around the core. These cproject into the con 1guous coresections an insure correct The' core sections' able ,material tAccording to my present invention an endless, driven eable- 41 runscontinuously carry the collapsed cores forward. At the front end ofthe-apparatus, the cable runs around a dri Ydrum 42 which is actuatedtg: universell jointed me s im:l the vje mentioned gearing 2,0 or'by asearate motor as desired. 'shhft 43 is iseon-y nectible so that theyreinforce if used, ma bev inserted in position. At therear endo theapparatus, the cable runs around a drum. 44 which is mounted on atrailer 45. This trailer is located within the pipe at the rear end ofthe a paratus and is caused to4 move along' with t same through themedium of the vcable which connects it with the inverted mold 12 onwhich the drum 4 2 is mounted. j f 46 indicates va saddle which ismounted over the cable abreast or ahead ofthe trailer, furnishing a seatfor the o rator who works inthe lpipe at the rear en of the apparatusand w ose duty is to collapse the sections and connect -thein' with thecable. For the purpose of so connect' the sectionswith he cable, Irovide a grip link 47 hich is arranged to s ide -on .a bar 48 ha itsends secured to the bottom of the section 31' of the core. Eachlcore isprovided with a grip and these are hined so that they'-may be throwndown as in icated by the full lines in 2 or raised as shown by thebroken linesV inl ig. 2 and the full lines in Fig. 4. The orips aremounted to slide on the bar 48 so hat when the core sections are beingmoved ahead, the grips will be free `to move up to the front ends of thecore sections and when the grips are to be engaged with the' cable theymay be moved backward by the-opera- 'torwithin convenient reach.

Each core is providedat itshlower portion normal, the

` coll aps with internali angle platesl 49 which form tracks or railsVon which the collapsed core sections run end. to endof the ap aratus.The extremities of these angle p ates are inclined as 7shown' in VFigs'.3 and 4 and 70 match together snugly.

50 indicates links which are removabl connected'to the inner sides ofthe an lye plates. "These links serve normal to ho d ,the several coresfirmly together, ut when "rb along the outer `sides of t e angle latesof 8b the extended cores in the manner s own by tlie broken lines inFig. 2 and the full and broken lines in Fig. 4. In this adjustment the.links serve to guide the collapsed core and prevent the same fromturning or rockas'. it moves through the apparatus. These links 50, itwill thus be seen, serve two distinct functions, rst, to connect thecore sections when in operative adjustment and,

second to run against the outer sides of the angle plates 49 of said.core sections to prevent rollin of the collapsedV section. To `dise ge te grip from the cable as the colla section approaches the drum 42 a stopbar 41* (shownby broken lines in F 1 and full lines in Fig. 8) isprovided.A The grip, when in operation, is'inclined forward as showninFigs. 4 and 8 and when the drum 42 is approached the extended upper endof the grip strikes the stop 4,1 and 1s moved up 106 to erpendicularposition, thus releasing the cab e and stopp` the core.

. In theorganizf -iopergtion ofthe appara tus, as the construction ofthe dpipe is started, f the extendedl cores are intro machine and whenthe operation becomes parte assume the relative tions shown in'Figs. 1a, 1, and 1.

leased and the wings 32 allowed to fall into 120 colla sed position.Finally the operator sho d lift the grip 47 into e agement with theforwardly moving run of t e cable. The

ed core will `then take u of the bottom section 31 'ci the co apsed coreand of the angle plates `49, will ride u on lthe ad'acent edges of thecorresponding' the next adjacent core and the co lapsedcore will passinto theol-.haremos in 4151,0

inks' over to the outer sides of the 80 4ico uced into the 110 The op#erator, stationed on the trailer 45 at certainY- f -rranged intervals,or .upon receiving a, 1115i `si alfrom the front end of the machine, i

disconnects the links 50-froin the inner -ides, 'Y

l the forward movementpf the cable. The s antin edges the manner shownin Fig. 4, runninr with the cable through all of the extended cores andbeing carried by said cable into the inverted mold at or directly behindthe drum 42. At this point the rip is rendered inactive by the stop 41B.his collapsed core is then extended and adjusted into proper positionwith respect to the forwardmost core, the links 5() are again connectedat the inner sides of the angle lates 49 and the pipe as it is formedgradual y envelops the core which has just been moved to its newposition. The cores it will be observed, do not mov'e in the pipeexceptin when one is collapsed and sent forward, w ile the shaper,invert mold, cap mold and trailer are moved continuously forward underthe action of the cable 16 and the mechanism for winding the same. Byemploying a sufficient number of cores, the pipe may be allowed toharden before the sulpport of the core is taken 'from it and by colapsing the core and providing for its free movement through the othercores, I am enabled to construct the arts lightly and to carr on theoperation o hemaclnine with consi erably less expense and difficulty"than heretofore. The saddle 46 may be rested either on the bottom of theipe just ahead of the trailer or if desired on t e trailer and may or byt e trailer as desired. The trailer is arranged to move a sufficient'distance behind the core sections to avoid danger of collisiontherewith, the positions of the parts being such that the trailer nevercomes up into contact with the core sections.

Having thus described the preferred embodiment of my invention, what Iclaim as new and desire to secure by Letters Patent of the United Statesis:

1. An apparatus for molding concrete pipev in situ, having a series ofcolla sible core sections capable When colla se of resting on and movingthrough eac other and automatic devices for dragging the collapsedsections through the other sections when the collapsed sectlons areresting on the other sections.

2. An apparatus for molding concrete pipes 'in situ having a series ofcollapsible core sections, means carried by said sections whereby theare adapted to slide on and through eac other, from the rear to thefront of the apparatus, a driven cable running through the core sectionsand grips for connecting the cable with'the sections whereby they may beadvanced as aforesaid.

3. An apparatus for molding concrete pipes in situ having a seriesofcollapsible core sections capable of being moved through each other anda driven cable running through the core sections to move them onethrough the other.

4. An apparatus for molding concrete be advanced either by the operatorpipes in sitwhaving a series of collapsible core sections capable ofbeinO' moved through each other, an endless cabzle operating in the coresections and means for releasably connecting the core sections with thecable.

5. An apparatus for molding concrete pipes in situ, having a series ofcore-sections each with collapsible wings at its upper portion, allowingthe core sections to be collapsed without disturbing the regular form ofthe lower portions thereof, whereby the core-sections when collapsed maybe caused to slide on their said'lower portions the one throu h theothers.

6. apparatus for m'olding concrete pipes in situ havin a series ofcore-sections, each with collapsible Wings at its upper portion,allowing the core sections to be-collapsed Without disturbing theregular form of the lower portions thereof, whereby the core sectionswhen collapsed may be caused to slide on their said lower portions theone through the others, and means attached to and carried by the lowerportion of each core 'section at the inner sidethereof to support thecore sections when sliding through each other.

7. An apparatus for molding concrete pipes 'in situ, ha a series ofcore-sections, each with collapsible Wings at its upper portion,allowing the core-sections to be collapsed Without disturbing theregular form of the lower portions thereof, whereby the coresectionswhen collapsed may be caused to slide on their said lower portions theone through the others, latches foi releasably securing said wings inextended position and a member extending longitudinally of each coresection Within the same for operating said latches.

8. An apparatus for molding concrete pipe in situ having a series ofcore-sections with collapsible wings, angle meinberssecured to themeeting edges of the wings and adapted to engage each other when thewings are extended, and a releasable latch carried by one section andadapted to engage and hold the angle members in connection with eachother.

9. An apparatus for molding concrete pipe 'in situ, having a series ofcore-sections with collapsible wings, angle members secured to themeeting edges of the wings and adapted to engage each other when thewings are extended, a releasable latch carried by one section andadapted to engage and hold the angle members in connection with eachother, and one of the angle members having an opening therein permittingthe introduction of a tool from the interior of the core section, bywhich to force the disengagement of the angle members.

10. An apparatus for molding concrete;

ythe contiguous rails, said links A*being exam pipes comprisingcollapsible core sctits.` movable one through the other,` a c'ableadapted to run through the core sections and a cable grip slidablymounted on each `core section.

1l. An apparatus for molding concrete pipes comprising a plurality ofcollapsible core sections adapted to move through each other, a cablerunning through the core sections, a bar attachedto each core sectionand a cable grip slidably carried on each bar.

1.2. .An apparatus for molding concrete pipes. comprising core sectionsmovable through each other, means in said sections formingv a track adated to be engaged by the coresections an on which the core sec tions areadapted to move, and means on the core sections preventing them fromrolling on v the track.

13.y An apparatus for molding concrete pipes com rising core sectionsmovable througheac other and railsextend" longitudinally in the coresections and having beveled engaging ends for the pu ose specied.

14. An apparatusA for moll-sing concrete pipes comprising core sectionsmovable through each other, rails extending lon@- dinally in the coresections and having eled engaging ends for the purpose specified, andmeans for releasably connecting thecontiguous rails to fasten the 4coresections tegether in alinement. r

.15. An'apparatus for molding concrete pipes comprising core sections'movable through each other, means in the cere eeetions forming a trackon which the core seetions move and guides carried b' the cere sectionsto prevent them from roc entire track.

16. An apparatus for molding (sentirete pipes comprising core sectionsmovable Athrough each other, rails secured in :the -core sections andconnecting links adapted to capable of depending from the'iails to, thecore sections in their-movement.

17i. .A11` apparatus for molding pipes comprising a number of ceresections ca able o being moved lone through the ot er, a cable runningthroughfthe ooi-esections, means for releasably connecting `the cablewith the core sections, a trailer running behind the alpparatus andhaving a -sh'eave over `Whicht e cable runs, a member at the head ot,`the core sections .also ashcave 4 over which the cable runs andlineansfcr advancing said member as thecereseetions are` sent forward. ic y l 18. An apparatus for forming concrete pipes, -compns 'an earthshapenaa cap mold, aiiiiiveit` molimeransforadvacing said parts, asheave on one' of said paits, an

endless cable over the same 'aftlailer leaving a sheave over Which the:cable Vdrive traild Vand adapted todraw from one end to the other.

v driven cablato ltrailer and adapted toldraw the coi-e sec tions romenel-e d to Athe other, and means having connection with the sha erfamotor mounted on the shaper, means riven by the motor for advancing theap aratus, a number of core mold sections ca a le of moving one throughthe other, a trai er, a cable xtendi between the trailer and invertedmold, an adapted to draw the core sections through each other and means`for driving said cable. 20. -An ap aratus for forming concrete pipe,comprisih an earth sha er, a cap mold, an inverted mo d, the inverte andcap lds havingconnection with the sha er, -a otor mounted on the shaper,'means 'ven by the motor for advancing the ap aratus, anumber ofcore'mold sections capra le of moving one through another, a trailacable exten between the trailer and'inverted mold,` ada ted te drawthcccre vsections throu vh eac other and means for said cab e from themotor on the shaper.

2L An apparatus for molding concrete ipe having a Shaper, an invertedmold, -a 1 easable connection between them means for adjusting saidconnection.

22. apparatus' lfor molding ipe a shaper, lin-inverted meld, a.reeasableccnnection between them land lmeans for "adinet" saidconnection, ce rising threadedsha t and Mitleid-devices or rotating theshaft inpeither direction.

. 23. An .apparatus for .molding 'ipe having as easable connection4between them and means for adjusting said connection comprising athreaded shaft and nut, a hand wheel inconnection with the shaft and aratchet mechan- -is'm also Ain connectionfvvith the shaft.

24. apparatus for forming concrete gpe having a number-ofzcbresection's,capah e'of being moved 4t each other, a

concrete member at. the front end c the apparatus, a,

trailer at thetail of the ap aratus and `a cable connecting sai `memberand the core sections t 25. an apparatuslfoiforming vceiiciaste ipc imaga climber-cf wie sections capcle `of moved 'throu each ether, a. memberat the icfst apparat fa trailer at the 'tailor cp arci-.us an' a sai4member and 2for advancing ls 'd member at the lie'ad of *theapparatuswithf `th'foiination of 'the ,and t e cable also l.serving `to drawlinking. Y

r, an inverted mold, -a le-4 concrete iis.

26. An apparatus for forming concrete pi es having a number of coresections mov- 'abe through each other, a member a-t the head of theapparatus, a trailer adapted to follow the apparatus, an endless cablerunning through the core sections and connecting said member and trailermeans for driving the cable; and means for releasabl con-V pting thecore sectionslwiththe ca le at 27. An apparatus for forming concreteipes having a number` of core sections, capable of being moved througheach other, an earth shaper at the front end of the apparatus, a"trailercat the tail of the ap aratus and a driven cab onnectin said,earth Shaper and trailer, and te to drawr the core sections from 'oneend e other.

28. An apparatus for mold concrete pipes 'im situ having a series ofcore sections capable of sliding on and through each other, from therear to the front'of the apparatus, means for so moving the coresections, comprising a driven ca le running. through the core sectionsgrips for connecting the cable with the sections and means forautomatically disengaging the grips from the cable at the end of themovement of the core sections.

29. An apparatus for molding concrete pipes 'in situ having a series ofcore sections capable of sliding on and throu h each other, from therear to the front of t e apparatus, means for so moving the coresections comprising a cable running through the core sections and gripsfor connecting the cable with the sections.

30. An apparatus for molding concrete pipes 'in situ having a series ofcore`sections capable of sliding on and throu h each other, from therear to the front. of t e apparatus, means for so moving the coresections, comprising a cable runmng through the core sections, grips forconnecting the cable with the sections and means for advancing theapparatus with the formation of the pipe.

31. An apparatus for molding concrete pipes in situ having a sexies ofcore sections capable of bein moved through each other, an endless cab'e operatin in the core sections, means for releasabr connecting thecore sections with the cab e and me'ans for automatically breaking suchconnection at the end of movement of the core sections.

32. An apparatus for molding concrete pipes com rlsing a number of coresections capable o being moved through each other, a cable extendinthrough the core sections and adapted to aul the core sections forward,a trailer behind the apparatus and connected with the cable, and amember at the head of the apparatus with which the cable 'B alsoconnected. p

33. An apparatus for molding concrete pipes comprising a number of coresections 34. An apparatus for forming concrete pipes comprising an earthShaper, a cap mold, an inverted mold, means for advancing said partsWith the formation of the pipe a cable connected to one of the saidparts, a trailer with which the cable is also connected, and a number ofcore mold sections located intermediate the trailer and Shaper andthrough` which the cable extends, such core sections being adapted to behauled by the cable' through each other.

35. rAri apparatus for forming concrete pipes having a number of coresectionsl, capable of being moved through each otherl, a member at thefront end of the apparatus a trailer at the tail of the apparatus and acable connecting said member and trailer, and adapted to draw the coresections from one end to the other. p

36. An `apparatus for forming concrete pipe having a number of coresections capale of being moved throu h each other, a member at the headof t e apparatus, a trailer at the tail of the a paratus and a cableconnecting said member and trailer, and adapted to draw the coresections from one end to the other, and means for advancing said memberat the head of the apparatus with the formation of the pi e and thecable also serving to draw the tr er along.

37. An apparatus for forming concrete pipes havin a number of coresections movable throug each other, a member at the head of theapparatus, a trailer adapted to follow the ap aratus, and an endlesscable connected w1 said member and said trailer and adapted to haul thecore sections ahead as the ipe is formed.

38. apparatus for forming concrete pipes having a number of coresections, capable of being moved through each other, an earth Shaper atthe front end of the apparatus, a trailer at the tail of the apparatusand a cable connecting said earth Shaper and trailer, and adapted todraw the core sections from one end to the other.

39. An apparatus for forming concrete pipes having a number of coresections, a member at the head of the apparatus, a trailer adapted tofollow the apparatus, an an endless cable connected with said member andsaid trailer and adapted to haul the core sections ahead as the pipe isformed.

40. An apparatus for forming concrete pipes having a number of coresections, a

member at the head of the apparatus, aA

trailer adapted to follow the apparatus, an endless cable connected withsaid member and said trailer and adapted to haul the core sections aheadas the pipe is formed and means for advancing the said member with theformation of the pipe.

41. An apparatus for forming concrete pipes having a number of coresections, a member at the head of the apparatus, a trailer adapted tofollow the ap aratus `and a cable connected with said meiner and saidtrailer and adapted to haul the core sections ahead as the pipe isformed.

42. An apparatus lor forming concrete pipes having a number of coresections, a member at the head of the apparatus, a trailer adapted tofollow the apparatus, and a means connected with said member and saidtrailer and adapted to haul the core sections ahead as the pipe isformed.

43. An apparatus for forming concrete pipe having a molding means at thehead of -the ap aratus adapted to advance with the from the rear to thefront as the pipe 1s formed.

44. An apparatus for molding concrete pipes 'in situ, havingasexies ofcollapsible core sections adapted. when collapsed to move on andthrougli each other, a driven means moving continuously through theapparatus and means for releasably connecting the core sections withsuch means, whereby to move the core sections.

In testimony whereof I have signed my name to this specification in thepresence of two subscrlbmg Witnesses.

ERNEST LESLIE RAN SOME. Witnesses:

EDITH J. FULLER, ISAAC B. OWENS.

